IMO underrated guitarist, got see Fleetwood Mac live a year or so ago, and I was amazed what a great guitarist he is.
In the studio you can see hear glimpses of his greatness but live, its another story, just amazing.
His solo stuff, as a kid, I hated it, did not appreciate it, as an adult, a very talented man, who purposely seemed to have moved away from the type of material he wrote for Fleetwood Mac, which was brave but probably not a good idea commercially speaking.